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aivan3 [116]
3 years ago
15

When a radioactive isotope releases an alpha particle, the atomic number of the atom is

Chemistry
1 answer:
Ipatiy [6.2K]3 years ago
5 0
The radioactive isotope's atomic number decreases by two, and the alpha particle has an atomic number of 2. It wasnt clear which one you were asking for, so there is both.

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Identify the variables in this hypothesis.
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Explanation:

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Write a net ionic equation to show that hydroiodic acid, hi, behaves as an acid in water.
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Why doesn't gravity pull water all the way to the center of the Earth?
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6 0
3 years ago
I don't know how to do this can I get the answers plz it's due in 1 hour
katrin [286]
Okay, so even if I just gave you the answers, your teacher needs work on it too so it'll be easier/better if I just explain how to do it.
Basically, both sides need to have the same number of molecules. To do this, we make charts. This is the first side of number one:
Na - 1
Mg- 1
F - 2
The subscript gives F two molecules, and the other ones only each have one. This is the second side:
Na- 1
Mg- 1
F- 1
So they're not equal. To fix this, we add coefficients. These are numbers that are going to appear in the front of each compound/element and changes the number of molecules of the WHOLE compound/element. We need two F on the second side, so we'll put a coefficient of 2 in front of NaF. The new chart for the second side is this:
Na- 2
Mg- 1
F- 2
Now we've fixed the F, but now Na is off! So let's go to the first side again and see what we can do. We can put a 2 in front of the Na. The new chart is this:
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Now both sides are the same. The full new equation is:
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